It has 4 significant digits but only one value.
4 of them.
For the values: 1089 and 297 the LCM is: 3,267
For the values: 17,787, 4,851 and 1,089 the LCM is: 53,361
One.
1089 squared = 1,185,921
4 of them.
For the values: 1089 and 297 the LCM is: 3,267
1089 = 3 x 3 x 11 x 11 So, no, only two.
For the values: 17,787, 4,851 and 1,089 the LCM is: 53,361
Three significant digits.
One.
24 goes into 1089 45.375 times
1089 is a composite number because 363 X 3 = 1089, 1 X 1089 = 1089, and 1089 / 9 = 121.
11 × 99 = 1089
3. trailing zeros give scale but are not significant as values of accuracy
2400.834 lb's
1089 squared = 1,185,921